DAOD Positioning Reference Signal Configuration for Neighboring Cells
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Solution Overview
Problem
Current technologies lack effective solutions for reference signal configuration and measurement reporting configuration in downlink angle of departure (DAOD) positioning, particularly in scenarios involving neighboring cells and inter-frequency measurements.
Innovation Solution
A positioning method and apparatus that provide assistance information and measurement reporting configurations for DAOD positioning, allowing for inter-frequency measurements by configuring reference signals such as CSI-RS, PRS, and SSB, and supporting path power reporting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional reference signal configuration is used for DAOD positioning, then the positioning method is simple, but it cannot support inter-frequency measurements and neighboring cells
Solution Approach 1:
The patent divides the reference signal configuration into separate components: a first reference signal for intra-frequency measurements and a second reference signal for inter-frequency measurements. This segmentation allows the system to handle different measurement scenarios independently, enabling support for both intra-frequency and inter-frequency measurements without overwhelming complexity.
Solution Approach 2:
The patent creates a unified reference signal configuration framework that serves multiple functions: the first reference signal handles intra-frequency DAOD measurements, the second reference signal handles inter-frequency measurements, and both can be configured for neighboring cells. This multi-functional design increases adaptability while managing complexity through standardized configuration procedures.
2Measurement precision
If reference signal configuration information is provided for all cells, then positioning accuracy is improved, but measurement reporting complexity increases
Solution Approach 1:
The patent applies different reference signal configurations to different cells based on their specific characteristics. Intra-frequency cells use the first reference signal configuration optimized for their frequency characteristics, while inter-frequency cells use the second reference signal configuration optimized for their frequency differences. This localized optimization improves positioning accuracy without requiring a uniform complex configuration for all cells.
Solution Approach 2:
The patent enables dynamic configuration of reference signals based on the measurement scenario. The system can selectively activate the first reference signal for intra-frequency measurements or the second reference signal for inter-frequency measurements, allowing the configuration to adapt dynamically to the specific positioning needs rather than always using a fixed complex configuration.
3Measurement precision
If path power reporting is enabled for all paths, then positioning precision is enhanced, but the amount of measurement data to process increases
Solution Approach 1:
The patent enables path power reporting selectively rather than requiring all paths to be reported. The system can configure the terminal device to report path power only for specific paths that are relevant to the DAOD measurement, such as paths corresponding to the configured reference signals. This partial reporting approach enhances positioning precision for the measured paths while reducing the overall data processing burden compared to reporting all possible paths.
Data Source
AI summary
A positioning method and an apparatus include sending a first request message to the terminal device, the first request message comprising measurement reporting configuration information comprises at least one of the following instructions: whether a path power is to be reported; and a quantity of powers to be reported in a path when the path power is to be reported. A reference signal measurement result of one or more cells is received from the terminal device. The reference signal measurement result includes at least one of reference signal received power (RSRP) and path power. A downlink angle of departure (DAOD) of the terminal device relative to each of the one or more cells is determined based on the reference signal measurement result.